| BBÖ Class 12, DRB Class 69.0 ÖBB Class 69 |
|
|---|---|
| Number(s): | BBÖ 12.01–02 DRB 69 001–002 ÖBB 69.02 |
| Quantity: | 2 |
| Manufacturer: | Floridsdorf |
| Year(s) of manufacture: | 1934, 1937 |
| Wheel arrangement: | 2-2-2T |
| Axle arrangement: | 1A1 n2t |
| Gauge: | 1,435 mm |
| Length over buffers: | 7,927 m |
| Height: | 3,880 m |
| Overall wheelbase: | 3,300 mm |
| Service weight: | 32.0 t |
| Adhesive weight: | 13.0 t |
| Top speed: | 80 km/h |
| Driving wheel diameter: | 1,450 mm |
| Leading wheel diameter: | 870 mm |
| Trailing wheel diameter: | 870 mm |
| Cylinder bore: | 345 mm |
| Piston stroke: | 480 mm |
| Boiler Overpressure: | 11 bar |
| No. of heating tubes: | 99 |
| Grate area: | 1.04 m² |
| Radiative heating area: | 4.35 m² |
| Evaporative heating area: | 53.55 m² |
| Water capacity: | 4.0 m³ |
| Fuel: | 1.2 t oil |
The steam locomotive class BBÖ 12 was an express train tank locomotive class with the Federal Railway of Austria (BBÖ).
Convinced by the performance of the kkStB-Class 112 the BBÖ decided in 1934 to procure tank engines for regional express services as well. For reasons of cost, however, they achieved this by converting 0-6-0 tank locomotives built in 1898 by Krauss/Linz). One unit was converted by the Lokomotivfabrik Floridsdorf in 1934 and another in 1937. Locomotives 97.153 and 97.152 were used for the conversion. The boiler and the valve gear were used unchanged. Oil-firing was provided, the tank for which was installed on the rear section of the boiler barrel, and enabled one-man operation. The engines were given a special livery with the water tanks and driver's cab being painted light green.
The little locomotives proved themselves well, but no more were converted, because from 1935 the BBÖ DT 1 was available for short express trains.
In 1938 the Deutsche Reichsbahn took the engines over as 69 001 and 69 002. Only the latter was still around after the Second World War. It became ÖBB 69.02 in the Austrian Federal Railways (ÖBB) and was used on a bridge inspection train. This engines is still preserved today.